The rationale was that there should be no vote on the Disapproval until after congress had seen all the deals involved as the Corker bill required.
And Obama still refuses to turn over what he calls “side deals”.
Also the Disapproval would be vetoed and fail.
“Also the Disapproval would be vetoed and fail.”
That was always Boner and McConnell’s excuse for not doing anything.
If we didn’t have the Corker bill, what would the options be for the Congress in opposing the Iran deal?